neodymium152
Neodymium-152 is a synthetic radioactive isotope of neodymium. It is produced in nuclear reactors through various nuclear reactions, often as a byproduct of nuclear fission or through neutron capture by other neodymium isotopes. Its primary decay mode is beta decay, transforming into praseodymium-152, which subsequently decays further. Neodymium-152 has a relatively short half-life, on the order of hours, meaning it decays into more stable isotopes relatively quickly.
Due to its radioactivity and short half-life, neodymium-152 is not found naturally on Earth in significant quantities.